If you look a little closer, you will see a small island behind the observatory. Terns nest on it, and they have another island to the left of this one for nesting. About 40 meters to the right of the observatory is the place where I recorded the audio. The recording is mono. <a href="https://commons.wikimedia.org/wiki/File:Opazovalnica.jpg" rel="nofollow"><img alt="Opazovalnica" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Opazovalnica.jpg/256px-Opazovalnica.jpg"></a> Recorder: ZOOM H5 + MSH-6 If any of these sounds have been of help, and you are feeling charitable, please do consider <a href="https://freesound.org/donations/donate/" rel="nofollow">donating to Freesound.org</a> to help keep the site running (a link is also on the home page). Any donations are greatly appreciated! YOU ALWAYS HAVE TO CREDIT/ATTRIBUTE me (dibko) and <a href="https://freesound.org/" rel="nofollow">freesound.org</a> in your work if you use this sound. Please do it like this if possible: <a href="https://freesound.org/people/dibko/" rel="nofollow">https://freesound.org/people/dibko/</a> Thank you. This sound may NOT be used in (royalty free) stock material. Don't put my raw sounds/files on youtube or anywhere else. You can use them in creative way as a part of art-form, but not "re-distribute" as (royalty free) stock material. Thank you.